Dmitry, home from college, finds the house empty, except for Irina, his step-sister, hiding in her room. He hears soft moans and follows the sound, discovering her sprawled on her bed, her hand buried between her thighs. Intrigued, he watches silently, his own body responding to the sight. Irina, lost in her pleasure, doesn't notice him until she opens her eyes and finds him staring, his cock tenting his pants. 'What are you doing?' she gasps, but Dmitry just smirks, 'Watching you, Irina. You look so... hungry.'